Ring-turning device



Sept. 18,1923. mfimz'z W. S. PETERSON IIIIIIIIIIIIIII CE Filed June 13.1921 2 Sheets-Sheet 1 Sept, 18,1923. I I imam?" W. S. PETERSON I RINGTURNING DEVICE Filed June 13-. 1921 2 Sheets-Sheet 2 the ring.

Patented Sept. 18, 1923.

tree 'ArEs train rice.

WILLIAM PETERSON, OF GREAT FALLS, MONTANA.

RING-TURNING DEVICE.

Application filed June 13, 1921. Serial No. 477,342.

To all whom it may concern Be it known that I, WILLIAM S. PETER- son, acitizenof'the United States, residing at Great Falls, in the county ofCascade and State of Montana, have invented certain new and usefulImprovements'in Ring- Turning Devices, of which the following is aspecification. i i i The invention relates to ring-turning devices andmore particularly for use in turn inn collector rings. 7

It is. the main object of the invention to provide a mechanism which'maybe applied to the brush-holder standard of a rotary converter or othermachine having collector ringsso that the latter may be turned withoutremoving the brush-holder standard or other large parts from themachine.

I The invention essentially comprises a turning tool, a support adaptedto be attached to the brush-holder"standard, car riagc mechanismandmeans between the carriage mechanismand the tool for bringing the toolinto and out of engagement with For a full understanding of theinvention reference is made to the accompanying drawings inwhich- 'ZFig. l'is a fragmentary side elevationof a device to which the'inventionis applied;

Fig. 2 is a perspective view of adevice embodying the invention;

v Figs. 3 and iareside elevation and end view respectively of thedeviceshown in Fig. 2; and

Figs. 5, (Sand 7 certain details. N

In Fig. 1 of the drawings 1 represents the ring surface ofa collectorand 2 the areperspective views of brush-holder standard mounted upon asupport 3. The brush-holder standard, which is'of the usual design, hasa plurality of groups of perforations 4 for 'adjustably mounting thebrush-holders 5.

The device embodying the invention is dc signed to be m-ountedjon thebrush-holder standard 11111811 or" a brush-holder.

As indicated on alargerscale in Figsn 2, 3 and. 4,, the operatingmechanism of the ring turner is mounted upon a bracket 6 having holes 7spaced. to register with the holes 4 on the brush-holderstandard Thebracket'6 carries a dove-tailed slide bed 8 for the cross-feed carriage9.

The cross-feed carriage 9, in turn carries the slide bed 10 for thecutting feed carriage 11.

At the front of the bed 8 is attached a head plate 12 affording abearing for the feed screw 13. To the front of the carriage 11 isattached a plate 14 affording a hear- 'ing for the feed screw 15. Thescrew 18 extends into the carriage 9 and the screw 15 into the bed 10.When screw 13 is rotated the carriage 9 is moved relatively to the bed 8and when screw 15 is rotated the carriage 11 is moved relatively to thebed 10.

The relation of the cross-feed mechanism and the cutting feed mechanismis well understood from the prior art and need not be further described.a i i Upon the carriage 11 is pivotally mounted the tool holder. Thistool holder comprises a hinge plate 18, a t-ool'post 19, a

tool post washerQO, an adjustment shim 21 and a clamping screw '22. Theupper surface of the washer is spherically concaved and the lowersurface of the shim 21 is similarly curved to be angularly adjustablethereon.

The lower face of the hinge plate 18 is recessed to receive the baseflange 19 of the tool post, the latter extending upwardly through anaperture in the hinge plate, as clearly shown in Fig. 5.

The hinge plate 18 has two perforated depending lugs 17 seated inlateral recesses or pockets 16 in the carriage 11. The

pockets 16 have diverging walls to allow of 'pivotally connected to thecarriage 11. The

dished Washer 20 isthen passed over the free end of thepost and the shimplaced into the slot 26 of the post.- The tool 27 may now be clampedupon the shim by means of the screw 22. Due to the dished upper surfaceof the washer 20 and the be manipulated by. small hand wheels or a 7curved lower surface of the shim the tool may be adjusted in any desiredinclined position within a limited range of adjustment.

To attach the ring turner to the brush holder standard, it is merelynecessary to remove two ad -acent brush-holders to make.

room for the ring turner.

The operation otthe carriages 9 and 11 for carrying on the turningoperation is obvious. The tool is adjusted to the desired position bythe screws 13 and 15 whiclrmay key wrench (not shown). 7

iVhenready to cut, pressure is exerted on handle of the lever 25 so asto cause the tool post hinge' plate 18 to bear firmly upon 1 its seat onfeed carriage 11.

If the tool should have a tendency to gouge due to a mistake on the partof the operator, the frictional resistance or the tool upon thecollector lung during the rotary movement of the latter will tend toliftthe tool pointand throw it upward and back ward and a suddenpull'would cause theop erator to release the handle and free the tool. 7

It is thus a special advantage ofthe arrangement described that gougingis prac tically eliminated and injury avoided.

Another advantage of the device is the possibility of withdrawing thetool without changing the adjustment of the-parts determining theoperative position of the tool. 7.

It is another advantage of the arrange ment that no external drivingpower -:is required since the converter or other machine can. bestarted. and operated 1n the usual manner and then disconnected fromtheline 7 when asutlicient speed is attained, allow-' 7 ing' thering to beturned while the machine "is running idle,- tothemachine-is sufilcientto make substantialcuts .Another material advantage lies in the- T-hemomentum imparted possibility of turning rings without remov- 1 ing thebrush holder standard,1t belng merely necessary to remove two brushholders,or wlthout building up a SPQClEtl support for the cutting tooland its operating mechanism.

It IS understood that with n-the scope of the invention var1ous changesmaybe made.

7 The particular "form of the device is merely j referred to'asaipreferred embodiment of 1 the lnvention.

- I'claim '1 A ring-turning mechanism includingja bracket constructedand arranged tobeatl I tached to the bruslrholder standard of an Q[electric machine, a tool holdergmeans for:

. out of cutting moving the tool holder transversely of the bracket andat right angle thereto and means for quickly moving the tool into andout of cutting position relatively to the said mechanism.

2. A ring-turning mechanism including a bracket constructed and arrangedto be at-' tached to the brush-holder standard of an electric machine,.a tool holder, cross-feed and cutting feed mechanism onthe bracket. :7V for movingthe toolholderintofl'and outot operative positioniand apivotal connection between the tool holder and said mechanism forquickly moving the'tool holder into. and position relatively to the saidmechanism 7 7 3. A ring-turning V mechanism including abracketconstructed and arranged to be; at tached to the brush-holder standard,of an electric "machine, cross-feed mechanism mounted uponthe bracket,acutting feed mechanism: mounted upon the cross-feed mechanism and atool holder pivotally mounted upon the eutting feed mechanisn 4. Aring-turning mechanismincluding.a

mechanism and a lever for moving the tool holder about thejlnngeconnectio n'.

5. A ring-turning mechanism including a V bracket constructed and'arrangedt'olbe at tached to the brushholder standardof an electricmachine, a tool holder, mechanism for adjusting theposition o'fith'etool holder 7 upon the bracket to-bring the .holderfinto and out ofcutting position, and means be tween the saidfl'mechanisni and [the-toolholder for moving the latter into and out of a j fixed relationto theformer whereby the tool can be detached from the work'andi returned toits previous cutting position without changing the position of the saidmechanism.

6. A ring-turning mechanism including' 'a bracket constructed. andarranged to be;a' t

tached to the brush-holder standard of an electric machine, a toolholder, mechanism for adjusting the-position of the tool holder upon thebracketto bring the 'holderinto and out ofcu'tting position, a platepivotally I I connected to said jmechanism and carrying the tool holderanda lever connected to the I? said plate forgmoving the latte-r aboutits pivot.

.In testimony whereof, I hailix my signa j ivIL rAi r s. rernnsoiv.

ture.

